一般我們寫好實體之后，配置好數據上下文對象，還有在配置文件中改好連接字符串之后。
還不能生成數據庫，自動生成數據庫，有兩步關鍵步驟：
1. Enable Migrations
2. Update-database
執行玩第二步之后，就自動生成了數據庫。
------------------------------------實例----------------------------------------------------------------
//實體：
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
namespace PagingAndSortingInMvc.Entities
{
public class EmployeeMaster
{
[Key]
public string ID { get; set; }
[Required(ErrorMessage="請輸入員工名字")]
public string Name { get; set; }
[Required(ErrorMessage="請輸入手機號碼")]
public string PhoneNumber { get; set; }
[Required(ErrorMessage="請輸入Email")]
public string Email { get; set; }
[Required(ErrorMessage= "請輸入薪水")]
public decimal Salary { get; set; }
}
}
-------------------------------------------------------------------------------------------------------------
創建的數據上下文類：
using PagingAndSortingInMvc.Entities;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
namespace PagingAndSortingInMvc.Models
{
public class ApplicationDbContext:DbContext
{
public ApplicationDbContext()
: base("name=ConnectionString")
{ }
public DbSet<EmployeeMaster> Employees { get; set; }
}
}
-----------------------------------------------------------------------------------------------------
配置文件中的數據庫連接字符串：
<connectionStrings>
<add name="ConnectionString" connectionString="server=.;database=PageAndSortDB;uid=sa;pwd=Password_1" providerName="System.Data.SqlClient"/>
</connectionStrings>
----------------------------------------------------------------------------------------------------------------------------------------------------------
設置這些之后，編譯一下項目：
就運行：
1. Enable Migrations----------會生成一個類文件【Configuration.cs】,改一下AutomaticMigrationsEnabled 屬性為true
namespace PagingAndSortingInMvc.Migrations
{
using System;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Linq;
internal sealed class Configuration : DbMigrationsConfiguration<PagingAndSortingInMvc.Models.ApplicationDbContext>
{
public Configuration()
{
AutomaticMigrationsEnabled = true;
}
protected override void Seed(PagingAndSortingInMvc.Models.ApplicationDbContext context)
{
// This method will be called after migrating to the latest version.
// You can use the DbSet<T>.AddOrUpdate() helper extension method
// to avoid creating duplicate seed data. E.g.
//
// context.People.AddOrUpdate(
// p => p.FullName,
// new Person { FullName = "Andrew Peters" },
// new Person { FullName = "Brice Lambson" },
// new Person { FullName = "Rowan Miller" }
// );
//
}
}
}
2. Update-database ---執行玩這個之后，在數據庫中就生成了我們配置好的數據庫，數據表